JP3244580B2 - Tying muscle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar, and more particularly to a reinforcing bar used as a reinforcing bar in, for example, RC construction or reinforced concrete construction.

[0002]

2. Description of the Related Art It is well known that a large number of reinforcing bars are arranged one by one at predetermined intervals in RC structures.
In general, the spacing between one reinforcing bar and another adjacent reinforcing bar is 1.7D when the diameter of the reinforcing bar is D (differences between the centers of the reinforcing bars are 2. 7D).

[0003]

As described above, since the reinforcing steel used for the RC structure must be arranged at a predetermined interval, it is necessary to arrange many reinforcing steels in order to increase the strength of the RC structure. Then, as described above, there is a problem that the cross-sectional area of the reinforced concrete structure is increased by securing the interval between the reinforcing bars.

[0004] However, in order to avoid this, if an attempt is made to use a reinforcing bar that is thicker than a standard product, a custom-made product must be used, which greatly increases the cost and increases construction costs. It also causes.

An object of the present invention is to solve such a conventional problem, and the same effect can be obtained by using a conventional reinforcing bar in place of a conventional large-diameter reinforcing bar. It is to provide a bundle that can do it.

[0006]

SUMMARY OF THE INVENTION The present invention is a bundle,
In order to solve the above-described technical problem, the following configuration is provided. That is, in the present invention, a plurality of reinforcing
Strap placed in the cleat, before being bound
The intervals between the reinforcing bars 11 are set at the ends of the plurality of reinforcing bars 11.
It is configured by arranging columnar spacers 16 and 20 for holding.
And positioning of each of the reinforcing bars formed around the spacer.
The end of each reinforcing bar is inserted into a plurality of grooved seats 17 for
Placed and fixed to about half of the length of the
And the other half of the groove-shaped seat in the longitudinal direction of the spacer 16.
The other reinforcing bar ends are arranged in the portion 17 so that the spacer 16
20 is also used as a joint of a reinforcing bar .

[0007]

Further, the present invention relates to a stiffener for bundling a plurality of rebars 11 and arranging the same in concrete, wherein the ends of the plurality of rebars 11 to be bundled are kept spaced from each other. A plurality of columnar spacers 23 are arranged, and the reinforcing bar ends are arranged every other or in a plurality of groove-like seats 24 for positioning the reinforcing bars formed around the spacer. The other end of each reinforcing bar to be added to the seat portion 24 where the spacer 23 is open is arranged and fixed to the spacer 23.

[0009]

According to the binding wire of the present invention, the reinforcing bars 11 are bound along the plurality of seats 12b formed around the spacer 12, and the reinforcing bars 11 are attached to the spacer 12.
Is fixed. As a result, the reinforcing bars are bundled with the spacing therebetween maintained by the spacers.

In this manner, the plurality of reinforcing bars 11 are
Stitches 10 bound at predetermined intervals by
Is laid out in accordance with a standard method at the time of construction of a building, for example, and is embedded in concrete. At this time, as described above, the spacer 1 is provided between the central portion of the bundle 10 and each reinforcing bar.
Since the predetermined interval is ensured by the presence of 2, the concrete easily enters and the concrete is sufficiently fixed.

The bundle of the present invention is constructed by arranging column-shaped superiors 16 and 20 at ends of a fixed-length reinforcing bar to be bundled. A plurality of groove-like seats 17 extending in the longitudinal direction are also formed around the spacers 16 and 20, and each end of each reinforcing bar 11 is extended to a position almost half of the spacers 16 and 20 in the longitudinal direction. It is arranged and fixed along the part.

Each seat 17 in the other half of the spacers 16 and 20 in the longitudinal direction is used for arranging other reinforcing bar ends to be added. That is, this bundle 1
In No. 5, the reinforcing bar ends to be added and the reinforcing bar ends to be added are arranged and fixed on each half in the longitudinal direction of the groove-shaped seat portion 17 of the spacers 16 and 20 arranged for maintaining the interval between the reinforcing bars. By doing so, this spacer 16,
20 is also used as a joint for adding the reinforcing bar 11.

Further, in the bundle according to the present invention, a plurality of groove-like seats 24 extending in the longitudinal direction of the columnar spacers 23 arranged at the ends of the respective reinforcing bars constituting the bundle are formed around the bundle. Each rebar end is arranged at every other or at a plurality of groove-shaped seats 24. The other reinforcing bar ends to be added are arranged in the grooved seat portion 24 where the spacers 23 are open, and the two bundled bar ends are partially overlapped in the longitudinal direction. It is fixed to the spacer.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 1 shows a binding wire 10 according to a first embodiment of the present invention. A binding bar 10 according to this embodiment is formed by welding four columnar reinforcing bars 11 of a conventional size and welding them to a star-shaped spacer 12 (welded portions are indicated by reference numeral 13).

As shown in FIG. 2, the star-shaped spacer 12 has a curved seat portion 12b corresponding to a part of the peripheral shape of the reinforcing bar 11 at a side portion between the four protruding ends 12a.
It has. Such a spacer 12 is formed of cast iron or a processed product. The reason for bundling the plurality of conventional reinforcing bars 11 with the special spacer 12 interposed therebetween is as follows.

When a plurality of reinforcing bars 11 are simply bundled, FIG.
As shown in (1), the central portion is an extremely narrow space portion 14 whose periphery is closed in four directions. Therefore, if reinforcing bars are simply bundled as shown in FIG.
4 cannot enter concrete, and even if it does, concrete will have a problem in fixing to the reinforcing steel.

For this reason, it is necessary to bundle a plurality of rebars 11 using spacers 12 as shown in FIG. The spacers 12 may be arranged in an appropriate number at an appropriate position so that a predetermined interval between the reinforcing bars can be maintained at any position along the longitudinal direction of the reinforcing bars, and there is no particular limitation on the mounting position and the mounting number.

The bundle 10 thus constructed is
A plurality of reinforcing bars of normal size (conventional reinforcing bars) are bundled, but apparently regarded as one reinforcing bar and arranged. Thereby, the concrete can easily enter between the reinforcing bars 11 in the bundle 10 and exhibit a predetermined anchoring. As a result, it is possible to exhibit the same strength as using a large-diameter reinforcing bar.

FIG. 4 shows a binding bar 15 according to a second embodiment of the present invention. The bundle 15 of this embodiment is configured by bundling four rebars 11 as in the first embodiment.
A columnar spacer 16 is attached to an end of the reinforcing bar 11 to maintain a space between the reinforcing bars. This spacer 16
Is a spacer 1 whose end face shape is shown in FIG. 1 and FIG.
The four seats 17 on which the ends of each reinforcing bar 11 are positioned have a groove-like curved surface extending in the longitudinal direction of the spacer 16.

As shown in FIGS. 4 and 5, a partition 18 is provided in the groove-like seat 17 formed in the spacer 16 at an intermediate portion in the longitudinal direction.
7 is divided into left and right in the longitudinal direction. As shown in FIG. 4, the end of each reinforcing bar 11 is disposed on each one of the seats 17, and the end of each reinforcing bar 11 is welded to the spacer 1 by welding.
6 (the welded portion is indicated by reference numeral 19). As a result, each reinforcing bar 11 is connected to the spacer 1 disposed at its end.
6 are bundled while maintaining a predetermined interval.

By the way, this spacer 16
1 functions as a joint together with the function of holding and bundling them at predetermined intervals. That is, the reinforcing bars 11 constituting the bundle 15
When a long reinforcing bar is formed by further reinforcing the reinforcing bar, the reinforcing bar to be added is positioned on the other half of the spacer 17 in the longitudinal direction of the spacer 16 and is arranged on the same axis as the reinforcing bar to be connected. It is fixed to the portion 17 by welding or the like.

Accordingly, in the binding wire 15 of this embodiment, the spacers 16 for binding the reinforcing bars 11 at predetermined intervals are formed as pillars extending in the longitudinal direction of the reinforcing bars 11 as shown in FIG. By arranging and fixing the rebars 11 to be added to the seat portion 17 on the same axis, not only the rebars can be held at a predetermined mutual interval but also can be used as a joint of the rebars.

In the first and second embodiments described above, each reinforcing bar 11 is fixed to the spacer 12 or the spacer 16 serving as a joint by welding. As shown in FIGS. 6 and 7, the ends of each reinforcing bar 11 extending from both sides in the axial direction are arranged on each seat of the spacer 20 serving as a joint, and the outer peripheral portion thereof is made of, for example, a metal wire. It may be fixed by spirally winding at 21.

FIG. 8 shows a binding wire 22 according to a third embodiment of the present invention. The brace 22 according to this embodiment is basically configured by bundling four rebars 11 similarly to the brace in the first embodiment. This brace 22
To maintain the interval between the reinforcing bars 11, a columnar spacer 23 as shown in FIG. The spacer 23 is configured to also function as a joint for adding four rebars 11.

That is, the columnar spacer 23 is formed as shown in FIG.
As is clear from FIG. 5, the cross section has a regular octagon, but each surface is a seat portion 24 formed by a groove-shaped curved surface so that the reinforcing bar 11 can be closely adhered along the longitudinal direction. Therefore, eight seats 24 are provided on the peripheral surface of the columnar spacer 23.
Are formed. In each of the eight seats 24, four ends of each of the reinforcing bars 11 are arranged. Then, another four reinforcing bar 11 ends to be added to the seat portion 24 which is open every other spacer 23.

Therefore, when the reinforcing bars are added by the spacers 23, the ends of the reinforcing bars partially overlap with each other in the longitudinal direction. As described above, in the bundle 22 in the third embodiment,
The reinforcing bar ends to be added and the reinforcing bar ends to be added are arranged so as to overlap each other by using a large number of seats 24 of the spacer 23, and then the outer peripheral portion thereof is spirally formed by, for example, a metal wire 25. It is united by winding.

In each of the first and second embodiments of the present invention described above, the spacer 12 or the spacer 16 has a cross-shaped end face and is used to bundle the four rebars 11. However, it is needless to say that the spacer is not limited to this, and may be a spacer having seat portions corresponding to the number of reinforcing bars to be bundled. The same applies to the spacer 23 according to the third embodiment, and it goes without saying that the shape of the end face can be appropriately changed according to the gist of the invention.

[0028]

As described above, according to the strap of the present invention, the conventional ordinary-sized reinforcing bars are bundled using a unique spacer, and apparently used as one reinforcing bar. Since it is not necessary to use a custom-made product as in the conventional case, it is possible to suppress an increase in the cost of reinforcing bars,
The strength can be improved without increasing the cross-sectional area of the C structure.

Further, according to the tie of the present invention, a spacer for maintaining the interval of the tie is arranged at the end of the tie having a predetermined length to be tied, and the rebar is added by using the spacer. Accordingly, the reinforcement work becomes very easy compared with the conventional method in which the ends of the rebar are overlapped and welded one by one to reinforce one by one.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a binding wire according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a star-shaped spacer constituting a binding wire of the first embodiment shown in FIG. 1;

FIG. 3 is a cross-sectional view of a case in which conventional ordinary-sized reinforcing bars are simply bundled.

FIG. 4 shows a second embodiment of the present invention in a state in which joints and spacers capable of continuing to add another reinforcing bar at the same time as bundling each reinforcing bar at a predetermined interval are arranged at the ends of the reinforcing bars. It is a perspective view which shows such a bundle.

FIG. 5 is a perspective view showing a joint and spacer used in the binding wire according to the second embodiment of the present invention shown in FIG. 4;

FIG. 6 is a perspective view partially showing a state in which a reinforcing bar to be added to a joint spacer and a reinforcing bar to be connected to each other in a binding bar of the present invention are fastened by being wound together with a metal wire.

FIG. 7 is a cross-sectional view showing a binding wire using the joint / spacer shown in FIG. 6;

FIG. 8 is a perspective view of a binding bar according to a third embodiment of the present invention, in which a joint portion of a reinforcing bar is mainly viewed.

FIG. 9 is a perspective view showing a state in which another reinforcing bar is added to a joint / spacer which is arranged at an end of the reinforcing bar and serves as a joint and is bound at the end of the reinforcing bar according to the third embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bundling bar 11 Conventional normal size reinforcing bar 12 Star-shaped spacer 12a Protruding end portion 12b Seat portion 13 Welding portion 14 Space portion 15 Joint / spacer 16 Partitioning portion 17 Groove-shaped seat portion 20 Joint / spacer 21 Winding wire 22 Bundle bar 23 Spacer for joint use 24 Seat 25 Metal wire

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoji Hosokawa 2-10-26 Fujimi, Chiyoda-ku, Tokyo Inside Maeda Construction Industry Co., Ltd. (56) References JP-A-4-47071 (JP, A) Akira Mikai 63-192518 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04C 5/00-5/20

Claims (2)

(57) [Claims] Claims: 1. A plurality of reinforcing bars are bundled and arranged in concrete.
A plurality of reinforcing bars to be bundled.
At the end, a columnar space is used to maintain the spacing between the reinforcing bars.
Is formed around this spacer
Each of the reinforcing bars is provided in a plurality of groove-shaped seats for positioning the respective reinforcing bars.
The end is arranged almost half way in the longitudinal direction of the spacer and fixed.
And the other half of the spacer in the longitudinal direction of the spacer
Place each of the other reinforcing bar ends on this spacer and
A tie that is also used as 2. A bundled reinforcing bar which is arranged in concrete by bundling a plurality of reinforcing bars, wherein a columnar spacer is arranged at an end of the plurality of reinforcing bars to keep an interval between the reinforcing bars. And one placed on each of the plurality of grooved seats for positioning the reinforcing bars formed around the spacer.
The scan with placing the respective rebar end every plurality
Each other end of the reinforcing bar to be added to the seat where the pacer is open
Characterized by being arranged and fixed to this spacer .